ADC and GPIOTE interupts on same pin

[jcowfer]

I'm working on a design that requires an adc reading to be taken on a pin that is also used as an interrupt. I've looked at the reference manual but am still confused as to how switching between the two is done.

Initially the device is configured for an interrupt with GPIOTE. Before an ADC reading is taken I disable the profile with app_gpiote_user_disable(), and re-enable it after the readings are done. However after the read I no longer receive interrupts.

What exactly needs done to be able to switch from an interrupt pin to a pin that I can take an ADC reading from, and then back to an interrupt pin when it's finished?

[Hung Bui]

@jcowfer: How do you disable ADC pin after you are done with the reading?

Please make sure you have set NRF_ADC->ENABLE= 0x00 after you have done. If you have a look at the figure 15 at chapter 14 in the nRF51 reference manual, you can find there is a switch controled by ANAEN to switch between digital and analog for a pin.